Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
31 + 10 = ______
23 − 10 = ______
86 − 10 = ______
74 + 10 = ______
33 + 20 = ______
78 + 10 = ______
5 × 10 = ______
84 + 10 = ______
7 × 10 = ______
36 + 10 = ______
19 + 10 = ______
73 + 20 = ______
14 + 10 = ______
23 + 10 = ______
64 + 20 = ______
16 + 20 = ______
77 − 10 = ______
6 × 10 = ______
1 × 10 = ______
60 − 10 = ______
